forked from influxdata/telegraf
-
Notifications
You must be signed in to change notification settings - Fork 0
/
amon.go
160 lines (135 loc) · 3.48 KB
/
amon.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
package amon
import (
"bytes"
"encoding/json"
"fmt"
"net/http"
"strings"
"github.com/influxdata/telegraf"
"github.com/influxdata/telegraf/internal"
"github.com/influxdata/telegraf/plugins/outputs"
)
type Amon struct {
ServerKey string `toml:"server_key"`
AmonInstance string `toml:"amon_instance"`
Timeout internal.Duration `toml:"timeout"`
Log telegraf.Logger `toml:"-"`
client *http.Client
}
var sampleConfig = `
## Amon Server Key
server_key = "my-server-key" # required.
## Amon Instance URL
amon_instance = "https://youramoninstance" # required
## Connection timeout.
# timeout = "5s"
`
type TimeSeries struct {
Series []*Metric `json:"series"`
}
type Metric struct {
Metric string `json:"metric"`
Points [1]Point `json:"metrics"`
}
type Point [2]float64
func (a *Amon) Connect() error {
if a.ServerKey == "" || a.AmonInstance == "" {
return fmt.Errorf("serverkey and amon_instance are required fields for amon output")
}
a.client = &http.Client{
Transport: &http.Transport{
Proxy: http.ProxyFromEnvironment,
},
Timeout: a.Timeout.Duration,
}
return nil
}
func (a *Amon) Write(metrics []telegraf.Metric) error {
if len(metrics) == 0 {
return nil
}
ts := TimeSeries{}
tempSeries := []*Metric{}
metricCounter := 0
for _, m := range metrics {
mname := strings.Replace(m.Name(), "_", ".", -1)
if amonPts, err := buildMetrics(m); err == nil {
for fieldName, amonPt := range amonPts {
metric := &Metric{
Metric: mname + "_" + strings.Replace(fieldName, "_", ".", -1),
}
metric.Points[0] = amonPt
tempSeries = append(tempSeries, metric)
metricCounter++
}
} else {
a.Log.Infof("Unable to build Metric for %s, skipping", m.Name())
}
}
ts.Series = make([]*Metric, metricCounter)
copy(ts.Series, tempSeries[0:])
tsBytes, err := json.Marshal(ts)
if err != nil {
return fmt.Errorf("unable to marshal TimeSeries, %s", err.Error())
}
req, err := http.NewRequest("POST", a.authenticatedUrl(), bytes.NewBuffer(tsBytes))
if err != nil {
return fmt.Errorf("unable to create http.Request, %s", err.Error())
}
req.Header.Add("Content-Type", "application/json")
resp, err := a.client.Do(req)
if err != nil {
return fmt.Errorf("error POSTing metrics, %s", err.Error())
}
defer resp.Body.Close()
if resp.StatusCode < 200 || resp.StatusCode > 209 {
return fmt.Errorf("received bad status code, %d", resp.StatusCode)
}
return nil
}
func (a *Amon) SampleConfig() string {
return sampleConfig
}
func (a *Amon) Description() string {
return "Configuration for Amon Server to send metrics to."
}
func (a *Amon) authenticatedUrl() string {
return fmt.Sprintf("%s/api/system/%s", a.AmonInstance, a.ServerKey)
}
func buildMetrics(m telegraf.Metric) (map[string]Point, error) {
ms := make(map[string]Point)
for k, v := range m.Fields() {
var p Point
if err := p.setValue(v); err != nil {
return ms, fmt.Errorf("unable to extract value from Fields, %s", err.Error())
}
p[0] = float64(m.Time().Unix())
ms[k] = p
}
return ms, nil
}
func (p *Point) setValue(v interface{}) error {
switch d := v.(type) {
case int:
p[1] = float64(int(d))
case int32:
p[1] = float64(int32(d))
case int64:
p[1] = float64(int64(d))
case float32:
p[1] = float64(d)
case float64:
p[1] = float64(d)
default:
return fmt.Errorf("undeterminable type")
}
return nil
}
func (a *Amon) Close() error {
return nil
}
func init() {
outputs.Add("amon", func() telegraf.Output {
return &Amon{}
})
}